Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSEAGLE1990TALON BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTSEMISSION SYSTEMS & SUB-SYSTEMSEXHAUST GAS RECIRCULATIONEGR SYSTEM INSPECTION (CALIF. MODELS)
1990 Eagle Talon Base, Automatic
EGR System Inspection (Calif. Models)
1990 Eagle Talon Base, AutomaticSECTION EGR System Inspection (Calif. Models)
- Connect a vacuum tee into Green-striped vacuum hose from EGR valve and connect a hand held vacuum pump to vacuum tee.
- Start engine and let idle. With engine cold and coolant temperature less than 68°F (20°C), snap throttle open to race engine. If no change in vacuum reading on vacuum pump gauge is detected, system is okay.
- Run engine until coolant temperature is greater than 158°F (70°C). Snap throttle open to race engine. If vacuum increases to 4 in. Hg vacuum or more, system is okay.
- Disconnect vacuum pump from vacuum tee and connect it directly to EGR valve. Apply 8.5 in. Hg vacuum, check that engine stops or idles unstable. If engine stops or idles unstable, system is okay.
- If EGR system does not function as described, perform individual component testing.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.